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go/test/complit1.go
Rob Pike fc0dc04095 test: [a-c]: add introductory comments to tests
Very few of the compiler regression tests include a comment
saying waht they do. Many are obvious, some are anything but.
I've started with a-c in the top directory. More will follow once
we agree on the approach, correctness, and thoroughness here.
zerodivide.go sneaked in too.

R=rsc, r
CC=golang-dev
https://golang.org/cl/5656100
2012-02-19 13:19:43 +11:00

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1.0 KiB
Go

// errorcheck
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Verify that illegal composite literals are detected.
// Does not compile.
package main
var m map[int][3]int
func f() [3]int
func fp() *[3]int
var mp map[int]*[3]int
var (
_ = [3]int{1, 2, 3}[:] // ERROR "slice of unaddressable value"
_ = m[0][:] // ERROR "slice of unaddressable value"
_ = f()[:] // ERROR "slice of unaddressable value"
// these are okay because they are slicing a pointer to an array
_ = (&[3]int{1, 2, 3})[:]
_ = mp[0][:]
_ = fp()[:]
)
type T struct {
i int
f float64
s string
next *T
}
var (
_ = &T{0, 0, "", nil} // ok
_ = &T{i: 0, f: 0, s: "", next: {}} // ERROR "missing type in composite literal|omit types within composite literal"
_ = &T{0, 0, "", {}} // ERROR "missing type in composite literal|omit types within composite literal"
)